My neghbor has been building add on to the back of the house his add on roof is approximately 3 foot from the side of my house. his answer to me for this as well as a tree he planted right on the line is that I do not own the air. I have not seen any permits posted and some of the other work he has done has caused severe run off eroding my front yard. I do not have any money to stop this or to get an attorney. I do not know or understand my rights. I am in Douglas county nebraska. How far is his new addition suppose to be from my house?